Digital Electronics is a field of electronics involving the study of digital signals and the engineering of devices that use or produce them. Which is branch of electronics which deals with digital signals to accomplish the tasks. The digital signals are the signals which are represented using the binary language, i.e., 0's and 1's. Digital electronics are also electronic fields that include the area of digital signals and engineering elements that yields high productivity. It is comprised of multiple logic gates packed as integrated circuits. The complex devices require a simple electronic skeleton of Boolean logic functions. The digital signals are represented digitally without any noise interference. Examples of such devices are computers, information appliances, digital cameras, digital televisions, flash memory, key USB memory, mobile phones, hard disks, and devices of computer memory.